Thought if you knew where you were flying at and a general idea of the direction it was flying or over what dune, I would cruise around that area and take a quick look, but without even basic info, it makes it hard to even start to help.
Matt is just getting started with the SXS races and is doing one heck of a job, but with that he is using the Four Stroke Association's equipment who is running on Saturday. From what I hear Matt is in the process of acquiring his own equipment, so then he will be able to have the races on days he wants if that happens.
We park by bathroom 9 and our phones worked flawlessly during both Halloween and Thanksgiving at our camp, we did not really try them anywhere else much.